.button {
    background-color: #4CAF50; /* Green */
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
}

.button1 {background-color: #4CAF50;} /* Green */
.button2 {background-color: #008CBA;} /* Blue */
.button3 {background-color: #f44336;} /* Red */
.button4 {background-color: #e7e7e7; color: black;} /* Gray */
.button5 {background-color: #555555;} /* Black */

.button1 {font-size: 10px;}
.button2 {font-size: 12px;}
.button3 {font-size: 16px;}
.button4 {font-size: 20px;}
.button5 {font-size: 24px;}

/*边框*/
.button1 {
    background-color: white;
    color: black;
    border: 2px solid #4CAF50; /* Green */
}

.button {
    -webkit-transition-duration: 0.4s; /* Safari */
    transition-duration: 0.4s;
}

.button:hover {
    background-color: #4CAF50; /* Green */
    color: white;
}

.button1 {
    box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
}

.button2:hover {
    box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);
}

.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.button1 {width: 250px;}
.button2 {width: 50%;}
.button3 {width: 100%;}

.button {
    float: left;
}

.button {
    float: left;
    border: 1px solid green
}


/*按钮动画 "波纹" 效果*/
.btn-flow {
    position: relative;
    color: #FFFFFF;
    -webkit-transition-duration: 0.4s; /* Safari */
    transition-duration: 0.4s;
    text-decoration: none;
    overflow: hidden;
    display: inline-block;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: normal;
    line-height: 1.42857143;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    -ms-touch-action: manipulation;
    touch-action: manipulation;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-image: none;
    border: 1px solid transparent;
    border-radius: 4px;

}

.btn-flow:after {
    content: "";
    background: #90EE90;
    display: block;
    position: absolute;
    padding-top: 300%;
    padding-left: 350%;
    margin-left: -20px!important;
    margin-top: -120%;
    opacity: 0;
    transition: all 0.8s
}

.btn-flow:active:after {
    padding: 0;
    margin: 0;
    opacity: 1;
    transition: 0s
}

/*按钮加箭头*/
.btn-arrow {
    display: inline-block;
    border-radius: 4px;
    color: #FFFFFF;
    text-align: center;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: normal;
    line-height: 1.42857143;
    transition: all 0.5s;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-arrow span {
    cursor: pointer;
    display: inline-block;
    position: relative;
    transition: 0.5s;
}

.btn-arrow span:after {
    content: '»';
    position: absolute;
    opacity: 0;
    top: 0;
    right: -20px;
    transition: 0.5s;
}

.btn-arrow:hover span {
    /*padding-right: 25px;*/
}

.btn-arrow:hover span:after {
    opacity: 1;
    right: -10px;
}

/*按钮"压下" 效果*/
.btn-push {
    display: inline-block;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    outline: none;
    color: #fff;
    border-radius: 4px;
    box-shadow: 0 9px #999;
    border: 1px solid transparent;
}

.btn-push:hover {

}

.btn-push:active {
    box-shadow: 0 5px #666;
    transform: translateY(4px);
}